Patents by Inventor Donald William Tredinnick

Donald William Tredinnick has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5969022
    Abstract: The invention concerns a silicone-modified EPDM modified with a freeze release additive of a fatty acid amide and/or optionally, graphite having at least 85% carbon, and compounded and co-extruded onto the surface of elastomeric sponge automotive weatherstripping thereby forming a permanent skin surface on the sponge material. The resulting material has improved and desirable freeze-release and coefficient of friction properties. These improved properties eliminate the need for currently used spray coatings, resulting in manufacturing cost savings and more durable surface.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: October 19, 1999
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Angela Ellen Bova, Donald William Tredinnick